Test Index

JAMB Biology 2021 Paper

Question : 8

Total: 40

Solution:

Concept:

Soil water content is the amount of water retained by the soil after drainage, expressed as a percentage of the water added.

Explanation:

Water poured into the soil =

50 \, \text{ml}

Water drained through =

35 \, \text{ml}

Water retained by the soil =

50 \, \text{ml} - 35 \, \text{ml} = 15 \, \text{ml}

Percentage water content =

\frac{\text{Water retained}}{\text{Water added}} \times 100

\frac{15}{50} \times 100 = 30\%

Answer:

The percentage water content of the fully soaked soil is

30\%

, so the correct option is D.

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